A county coroner’s official visited the office of Michael Jackson’s dermatologist on Tuesday to follow up on a subpoena seeking additional medical records.
Assistant Chief Coroner Ed Winter said outside the Beverly Hills office of Arnold Klein that the doctor had been cooperating in the investigation.
Klein’s attorney, Richard Charnley, said in a statement that his client will provide the documents Wednesday.
Craig Harvey, the coroner’s chief of operations, would not specify what records were being sought.
Investigators have focused on the role drugs may have played in Jackson’s death.
In recent TV interviews, Klein said he had sedated Jackson for past medical procedures. He denied ever giving the pop star an unnecessary dose of drugs.